Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c14ec017e5162a…

MALICIOUS

PDF

222.3 KB Created: 2021-07-29 20:11:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 2f4cc11a9cc7bd6f73b55af6b7450c67 SHA-1: 56dbccfa74d3ff10676a16421541e73219de518b SHA-256: 68c14ec017e5162a2978fd16983f0c1ed3046e8b87e8bad8c841e96cf37796bd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains numerous links pointing to compromised WordPress upload directories, suggesting it's part of a phishing or malware distribution campaign. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards exploitation or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9650

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://sportcity.bg/webroot/img/content/files/minugejaviboxosolexarata.pdf In PDF document text
    • http://druckmaschinenservice.com/uploads/fce/files/pisitevavopufurusotiw.pdfIn PDF document text
    • http://project-st.ru/userfiles/file/86604253861.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a88e0303627---7978125491.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/3a80e7e9f83e09fefac054768d4b729f/wajidirogumifuvuvubufe.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609de39d5ca43---25968223022.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/jifuju.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/nesuxo.pdfIn PDF document text
    • http://kezmosas.hu/files/file/sixavevafikisi.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/523cbff18d53def378c383e50977425d/ninujovapodatokajiporudeb.pdfIn PDF document text
    • https://florerialafloresta.com/ckfinder/userfiles/files/vemiwexutopojepozerasit.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/354b89b6d29b689185152f9b21b8af87/79804381366.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fea7f595669---96484253110.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608c2402d20c5---25165015021.pdfIn PDF document text
    • http://poltinik.ru/userfiles/file/41020936036.pdfIn PDF document text
    • https://comillaspostgrado.es/userfiles/file/vigone.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/e90ae268b4a26a05a67c7df2cbc84aac/tatevitesukovalurad.pdfIn PDF document text
    • http://msamericapageant.com/clients/873634/File/93573319914.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160b137cf9eafe---muzoxukevunuvivu.pdfIn PDF document text
    • http://vendingchat.ru/uploads/ckfinder/files/pepev.pdfIn PDF document text
    • https://free-spirit-city.eu/uploads/wysiwyg/files/71726947199.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/51133092566.pdfIn PDF document text
    • https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/5cd4a9c829bbca113e4366a17fba1afa/81092210415.pdfIn PDF document text
    • https://gegeny.hu/uploads/file/9571221416.pdfIn PDF document text
    • https://triptoboloyfoundation.org/editorsfiles/files/supejoka.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/578ba872d905036be83ccefc3c5e8f8e/lolomidotuf.pdfIn PDF document text
    • https://rajakedua.com/contents//files/mudefovonofuru.pdfIn PDF document text
    • https://rabudiagnostic.com/userfiles/files/nezosotobijuje.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=courrier+sous+couvert+de+la+voie+hi%C3%A9rarchiquePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002ff6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF6C 10860 bytes
SHA-256: 6f1c57ed406112a5109d5602359aec9bde0d06f19d041ed64a5587af5249b70a
font_01_sfnt_off00031831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31831 22008 bytes
SHA-256: d90b4ba405520efa4687dc972c821db681000d87df58b56a944044f12c4b977a
font_02_sfnt_off00034f43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34F43 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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